Purchased a Clipper Creek LCS-20 and installed it. How do I tell if the car (2014 Cadillac ELR) is charging at Level 2? The charging screen inside of car only has options of 8 AMP or 12 AMP. Verified with instruction manual that the charger is working. Amber Power LED is lit and Green Charging LED is lit. 10/3 G NM-B wire,30 AMP breaker. I thought maybe a 240 volt screen would pop up or a option of 15 to AMPs would be selectable. Thanks for any help. Kinda new to all this.